Are the U.S. and Israel behind recent explosions in Iran?

There is growing speculation that the U.S. and Israel may be behind a series of unexplained explosions at Iranian facilites in recent weeks. The most notable of these blasts came at a uranium enrichment plant about 150 miles south of Tehran. Behnam Ben Taleblu, with the Foundation for the Defense of Democracies, joins CBSN for a closer look. Source